JPH02121719A - Conveying method for rim roll forming line - Google Patents

Abstract

PURPOSE:To eliminate conveying through dead load falling to prevent damages of the work to be worked by not leaving an in-process material on the way to forming dividing rim roll forming line into three groups and synchronizing working operations through each working machine and conveying on each conveying path. CONSTITUTION:An oiling station 2 rerounder machine 3, flaring machine 4, edge roller machine 5, transfer apparatus 6, No.1, No.2, No.3, roll forming machine 7, 8, 9, transferring apparatus 10 for expanding machine, expanding machine 11 constituting the rim roll forming line 1 are divided into at least three groups. The 1st group from the oiling station 2 to the transfer apparatus 6 and the 3rd group from the transfer apparatus 10 for the expanding machine 11 use the machine disposing and conveying method through the same interval, the 2nd group from the transfer apparatus 6 to transfer loading apparatus 10 for expanding uses the disposing and conveying methods with different intervals for the 1st and 3rd groups to enable smooth operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a transport method for a rim roll forming line in a rim manufacturing line for manufacturing automobile wheels.

(Prior art) The rim manufacturing line is required to manufacture coiled material into rolls, including a shear line for cutting to size, a coiling line for turning the cut material into a ring, a welding line for welding the coiled material to size, It consists of a forming line that forms a welded cylindrical blank into a rim shape by roll forming.

This rim roll forming line includes flaring, 10th forming, 20th forming, and 3rd forming.
It consists of each process such as 0-ruforming and expanding, and each processing machine.Each process and each machine are connected by an automatic loading/unloading device, and form and transport the rim in synchronization with each other. It was structured like this.

The conventional conveyance method of the rim roll forming line is as shown in Fig. 4, from the right side, the flaring 30, the
-Reforming 31. 20th - Ruforming 32,
30th - Processing machines are arranged in the order of forming 33 and expander 34, and the conveyance path 3 is on the right side of each processing machine.
5, a chain conveyor 36 was provided above along this conveyance path 35, and the blanks 37 were hooked at predetermined spacing positions on this chain conveyor 36, and were conveyed by being pulled upwards on the conveyance path 35. . The blanks 37 were conveyed sequentially from the process preceding the flaring 30. The blank 37 pulled up to the top was allowed to fall naturally from the hopper and received at the forming position of the processing machine, where the outer circumferential side of the blank 37 was supported and positioned to be formed.

In the first flaring 30, as shown in FIG. 6(a), press forming into a truncated cone shape is performed from both end surfaces of the blank 37, and after the forming is completed, the workpiece is further dropped from the processing position. No. 10-
It is pulled up by a Leforming chain conveyor, falls naturally from the top stage, is received at the processing position, and is sandwiched between the upper spindle 38 and lower spindle 39 as shown in Figure 7 (b) in Figure 6. The No. 10 process shown in Fig. 10 has been applied. Hereinafter, through the same process, (C) and (d)
) is subjected to the 20th-rule processing and the 30th-rule processing shown in (e), and is finally expanded and dimensioned as shown in (e) in the expander 34, and then transferred to the next process. It had been. In this rim roll forming, the workpieces addressed to each processing machine are fed one at the same time without interruption, so the same number of workpieces are retained in the conveyance path 35 of each processing machine. The aim was to improve work efficiency by allowing the machine to run automatically and continuously.

(Problem to be Solved by the Invention) However, in the conventional transportation method of the rim roll forming line described above, the rim is basically lifted to the top of the processing machine, allowed to fall under its own weight, and then received at the processing position by gripping and positioning. As a result, there were problems as listed below.

) Four to five workpieces must be kept waiting at all times in the elevator system, which includes a transport path for lifting the rim and a chain conveyor, and there are many work-in-progress products in the process of forming on the line. Therefore, at the end of work, it is necessary to remove these work-in-progress items from the machine, which wastes time, and at the start of work, it is necessary to remove the work-in-process items from the machine again. If these conditions were not met, automatic operation would not start, necessitating lost time for preparation.

(b) Since the rim is lifted to a predetermined position on each processing machine and dropped, the rim is received at the molding position, so the surface of the rim is easily scratched, which poses a quality problem.

(c) Misgrip occurs when the rim is received at the molding position, causing accidents such as crushing the rim in the processing machine, and production has to be stopped.

2) Since the rims are transferred along the transport path, the rims get caught during transport and the flow to the subsequent process is stopped, making it necessary to stop production.

(e) Since the transport method of lifting and dropping the rim is repeated, line operating energy is lost.

(f) The conveyance device provided in each processing machine is large, and there are drawbacks such as requiring a large floor space for installation.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to transport the rim roll forming line without leaving any unfinished products in the process of forming, and to drop the rim into the forming position of each processing machine. A transportation method for a rim roll forming line that stabilizes quality without causing any damage, prevents accidents caused by misgrip, does not stop the flow during transportation, performs transportation without energy loss, and requires less floor space. This is what we are trying to provide.

(Means for Solving the Problems) In order to achieve the above object, the rim roll forming line conveying method of the present invention includes an oiling station, a rerounder machine, a flaring machine, an edge roller machine, and the like that constitute the rim roll forming line. The transfer device, the first, second, and third roll forming machines, the expanding transfer device, and the expanding machine are divided into at least three groups, and the first group from the oiling station to the transfer device is , the processing positions of each machine are arranged at equal intervals, and a first conveyance path for conveying the workpiece by a conveyor is provided in accordance with the interval 2, and the transfer device is transferred from the transfer device to the expanding transfer device. In the second group, the processing devices of each machine are arranged at equal intervals different from those of the first group, and by reciprocating according to this interval, the position of the workpiece is adjusted to the processing device of the adjacent machine. A third group from the expanding transport transfer device to the expanding machine has machines disposed at the same intervals as the first group, and the interval η The means for this purpose is to provide a conveying method for a rim roll forming line, which is characterized in that a third conveying path is provided for conveying the workpiece by a conveyor.

(Function) The transport method of the rim roll forming line configured as described above is to divide the rim roll forming line into three groups, and the first and third groups are arranged and transported at the same intervals. The second group uses machines arranged at different intervals and a transport method from those of the first and third groups, thereby enabling smooth operation of the rim roll forming line. In other words, on the conveyor constituting the first conveyance path, stages for holding the workpieces are arranged in parallel at two intervals equal to the installation interval of the processing machines, and the workpieces are placed on each stage on this conveyor. They are held one by one and moved one pitch at a time on the conveyor. Then, when the first workpiece is moved at the oiling station, the second workpiece enters the oiling station. At this time, the first workpiece is positioned by the flaring wire loading/unloading device. When this work is completed, the first workpiece and the second workpiece are transported to the next station and transferred to the third station.
The workpiece enters the oiling station.

Thereafter, this operation is repeated without interruption, and the first workpiece is transferred to the second conveyance path by the transfer device. This second conveyance path is provided with four fixed stages arranged at equal intervals in accordance with the equidistant arrangement of the processing machines constituting the second group. The front side of the processing machine is configured to reciprocate by one pitch, so when the first workpiece is stored in the first stage, the second conveyance path moves forward by one pitch. Then, the first workpiece is transported to the processing position of the first roll forming machine. Then, during processing by the first roll forming machine, the second transport roll forming moves backward to store the second workpiece in the first stage, and after the processing by the first roll forming machine is completed. When the first workpiece is stored in the second stage of the second conveyance path, the second conveyance path again performs an outward movement and transfers the first workpiece to the second roll forming machine, and Second
The workpiece is transported to the first roll forming machine.

Thereafter, by repeating this operation, the first workpiece moves to the fourth stage and is transported to the third group of expanding transport transfer devices by forward movement. It is conveyed to the expanding machine through the same process as the first conveyance path.

As described above, the rim roll forming line conveying method according to the present invention divides the rim roll forming line into three groups, and each group is divided into three groups. Second. Since a third conveyance path is provided and the processing operations of each processing machine and the conveyance of each conveyance path are synchronized, there is no accumulation of work-in-progress as in the conventional example, and the work-in-progress is conveyed. This conveyance is provided in substantially the same plane, and there is no ups and downs during the conveyance process, and the conveyance is smooth.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 3.

In FIGS. 1 and 2, l is the rim roll forming line. This rim roll forming line 1
is a mechanical device that manufactures automobile wheels by forming rims on the cylindrical blanks manufactured in this previous process.

This rim roll forming line l is located from the right side of the figure with an oiling station 2 and a rerounder machine 3.
, flaring machine 4, edge roller machine 5, transfer device 6, first roll forming I! 7, second roll forming machine 8, third roll forming machine 9,
It is composed of an expanding line transfer device 10 and an expanding machine 11. Each of these processing machines is divided into three groups. That is, the first group is made up of 5N types from the oiling station 2 to the transfer device 6, and the second group is made up of the first, second, and 5N types from the transfer device 6 to the expanding machine transfer device 210. The third group of three types of third roll forming machines is composed of two types: the expanding line transfer device LO and the expanding line 1llll.

Each of the processing machines constituted by these three groups is provided with a transport path, so that workpieces to be transported within each group are moved. The first group includes a stage 1 that holds the workpieces A at regular intervals.
A first conveyance path 14 on which a conveyor 13 provided with a conveyor 2 runs.
is the provision.

This first conveyance path 14 is connected to the oiling stage 2.
The reference height of the workpiece A is set at a position where the processing positions of the respective processing machines are aligned at a constant height. The position of each processing machine is the stage 1 mentioned above.
They are placed every 2 pitches. Therefore, the stage 12 is configured to advance two pitches to reach the processing position of the processing machine. When the workpiece A is transferred to the transfer device 6 of the first group, the conveyor 13 in the first conveyance path 14 rolls it downward and passes through the lower side of the conveyance path to the oiling stage. It is designed to perform an endless rotation that appears on the right side of the ring 2.

As shown in FIG. 3, the second conveyance path 15 is located on the base 16 at a distance between the transfer device 6 and the first, second, and third roll forming machines (7.8.9 in FIG. 1). It has a configuration with four stages 17, 18, 19° 20 corresponding to the
1 is fixed, and rotary arms 22 that are respectively engaged with the bins 21 are slidably engaged. This rotating arm 22
The other end side is pivotally supported by a rotary drive section 23, and the rotation of the rotary drive section 23 causes the pivot arm 22 to rotate, thereby allowing the base 16 to move in an arc shape.

This base 16 is stopped at a position moved by 180 degrees from the initial position by a half rotation of the pivot arm 22, and the base 16
The upper stages 17, 18 and 19, 20 are both configured to be moved to a position shifted by l pitch. Therefore, the stage 17 is configured to reciprocate between the transfer device 6 and the tenth roll forming machine 7.

Further, the stage 18 is between the first and second roll forming machines, the stage 19 is between the second and third roll forming machines, and the stage 20 is between the third roll forming machine and the expanding line transfer device 10. Since the workpiece is reciprocated between and, the workpiece is transported through each process one by one.

As shown in FIG. 1, the third conveyance path 24, like the first conveyance path 14, has stages 12 arranged at regular intervals on a conveyor 13, and the conveyor 13 rotates endlessly. It is configured to transport the workpiece received from the expanding line transfer device IO to the expanding machine 11 by moving it two pitches.

The workpiece processed by the expanding machine 11 is then sent to the next process from the end of the third conveyance path 24.

The operation of the transport method of the rim roll forming line of the present invention having the above structure will be explained.

The workpiece A-1 sent from the previous process is reversed to the rightmost end of the conveyance path 14 in FIG. 1, and the stage 12-1 moves forward.
The next workpiece A-2 is held in the next stage 12-
2... When the conveyor 13 is advanced one pitch at a time, the workpiece A-1 enters the oiling station 2 and is oiled. Further, when the conveyor 13 advances two pitches, the workpiece A-1 is checked and corrected at the welding point in the beam rounder 3. At this time, the next workpiece A-2 remains between the beam rounder machine 3 and the oiling station 2, and the workpiece A-3 is operated by the oiling station 2. When the flaring 814 advances by 2 pitches and press-forms both end surfaces of the cylindrical portion, and then advances by 2 pitches and is processed by the edge roller machine 5, the following workpiece A is placed in the flaring machine 4. -3 is being transported, and workpiece A-5 is being transported into the rerounder machine 3.

In this way, the workpieces are sequentially conveyed without interruption by the first conveyance path 14, and when the workpiece A-1 reaches the transfer device 6, there are ten workpieces on the first conveyance path 14. transported. Then, when the workpiece A-1 reaches the transfer device 6 and is pushed out to the front side of the roll forming line 1 by the transfer device 6, the stage 17 on the second conveyance path 15 receives it, and the rotation drive unit 23 Accordingly, the rotary arm 22 moves the base 16 in an outward direction, and sends the workpiece A-1 to the first roll forming machine 7. Then, the base 16 is moved backward by the rotary drive unit 23 to return to the initial position, and the next workpiece A is moved.
-2 Received workpiece A after completion of reroll forming process
-2 to the stage 18 and the workpiece A-2 on the stage 17 is transferred to the first roll forming machine 7, and the workpiece A-1 on the stage 18 is transferred to the second roll forming machine 7.
It is conveyed to the roll forming machine 8.

Thereafter, when the workpiece is subjected to the third roll forming process from the first to the third roll forming process, the workpiece A-1 discharged from the third roll forming machine 9 is transferred to the expanding line via the stage 20. It is transported to the mounting device IO and transferred to the stage 12 of the third transport path 24. Then, the stress remaining in the workpiece is removed in the final step of expanding 41111 by the walkway of the third conveyance path 24, and the workpiece is conveyed again by the conveyance path 24 of the cylinder 3 and taken out.

The above-mentioned series of operations are performed by a separately provided controller in accordance with the timing during machining. Since the third conveyance path is used, there is no accumulation of work-in-progress in each processing machine (and the work-in-progress is smoothly conveyed after a certain period of time).

(Effects of the Invention) As explained in detail above, the rim roll forming line conveying method of the present invention includes the oiling station, rerounder machine, flaring machine, edge roller machine, transfer device, The first, second, and third roll forming machines, the expander transfer device, and the expanding machine are divided into at least three groups, and the first group, which extends from the oiling station to the transa device,
The processing positions of each machine are arranged at equal intervals, and a first conveyance path for conveying the workpiece by a conveyor is provided in accordance with this interval, and the transfer device is transferred from the transfer device to the expanding line transfer device. In the second group, the machining positions of each machine are arranged at equal intervals different from those of the first group, and by reciprocating according to this interval, the position of the workpiece is adjusted to the machining position of the adjacent machine. A third group from the expanding line transfer device to the expanding machine has machines arranged at the same intervals as the first group. A third conveyance path is provided to convey the workpiece by a conveyor in accordance with 1/2, so there is no accumulation of work in progress between each processing machine, and since the workpiece is conveyed only in the horizontal direction, there is no drop due to its own weight. This eliminates the need to transport the workpiece due to mis-gripping, prevents damage to the workpiece due to misgrip, allows transport to be carried out without stopping the flow during transport, and without energy loss. It has many advantages, such as requiring less space.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, including a roll forming machine, 10... transfer device for an expanding machine, 11... an expanding machine, 13...
Conveyor, 14...first conveyance path, 15...second conveyance path, 22...rotating arm, 24...third conveyance path. Agent Takayama Hi My husband is Yama1, □, i (and one other person) For example, Figure 4 is a top view of the rim roll farming line,
FIG. 5 is a front view of the same, FIG. 6 is a rim manufacturing process diagram, and FIG. 7 is a perspective view of the rim roller.

Claims (1)

[Claims] Oiling station, rerounder machine, flaring machine, edge roller machine, transfer device, first, second and third roll forming machines, transfer device for expanding machine, which make up the rim roll forming line.
The expanding machine is divided into at least three groups, and the first group, which extends from the oiling station to the transfer device, has the processing positions of each machine arranged at equal intervals, and at 1/2 of this interval. In addition, a first conveyance path for conveying the workpiece by a conveyor is provided, and the second group, which extends from the transfer device to the expanding machine transfer device, has a processing device of each machine different from the first group. A second conveyance path is provided which is arranged at equal intervals and which conveys the position of the workpiece to the processing device of the adjacent machine by reciprocating in accordance with the interval, and from the transfer device for the expanding machine. The third group leading to the expanding machine has machines arranged at the same intervals as the first group, and a third conveyance path for conveying workpieces by a conveyor at half the interval. A method of transporting a rim roll forming line, characterized in that: